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All results from a given calculation for BrCN (Cyanogen bromide)

using model chemistry: PBEPBE/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
Energy calculated at PBEPBE/6-311+G(3df,2p)
 hartrees
Energy at 0K-2666.483002
Energy at 298.15K 
HF Energy-2666.483002
Nuclear repulsion energy124.835809
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at PBEPBE/6-311+G(3df,2p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 2199 2181 26.65 93.36 0.26 0.42
2 Σ 581 576 2.70 8.47 0.09 0.17
3 Π 359 356 1.09 0.99 0.75 0.86
3 Π 359 356 1.09 0.99 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1748.5 cm-1
Scaled (by 0.9918) Zero Point Vibrational Energy (zpe) 1734.2 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at PBEPBE/6-311+G(3df,2p)
B
0.13654

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311+G(3df,2p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.137
N2 0.000 0.000 -2.304
Br3 0.000 0.000 0.656

Atom - Atom Distances (Å)
  C1 N2 Br3
C11.16741.7925
N21.16742.9599
Br31.79252.9599

picture of Cyanogen bromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N2 C1 Br3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.644      
2 N -0.837      
3 Br 0.193      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 3.248 3.248
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.896 0.000 0.000
y 0.000 -28.896 0.000
z 0.000 0.000 -34.640
Traceless
 xyz
x 2.872 0.000 0.000
y 0.000 2.872 0.000
z 0.000 0.000 -5.744
Polar
3z2-r2-11.487
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.184 0.000 0.000
y 0.000 4.184 0.000
z 0.000 0.000 8.514


<r2> (average value of r2) Å2
<r2> 79.211
(<r2>)1/2 8.900